Machine for making and driving corrugated fasteners



Aug- 4, 1936- J. s. MccHEsNl-:Y 2,050,009

MACHINE FOR MAKING AND DRIVING CORRUGATED FASTENERS Filed sept.- 9, 1932 4 sheets-sheet 1 immuun' Aug. 4, 1936. J. s. MGCHESNEY MACHINE FOR MAKING AND DRIVING CORRUGATED FASTENERS Filed sept; 9, '1932 4 sheets-sheet 2 illIUIUl w w wk A1g 41 1936- J. s. MccHEsNr-:Y l 2,050,009

MACHINE FOR MAKING AND DRIVING CORRUGATED FASTENERS Filed Sept. 9, 1952 4 Sheets-Sheet 5 Patented Aug. 4, 1936 PATENT oEElcEv MACHINE FOR MAKING AND DRIVING CORRUGATED FASTENERS John .Sherman McChesney, Chicago, Ill.; Lula A.

` McChesney, executrix of Ysaid John Sherman McChesney, deceased, assignor to Lula A. Mc-

Chesney Application September 9, 1932, Serial No. 632,338

40 Claims.

The present invention is an improved power driven automatic machine for producing finished corrugated fasteners from strip metal or ribbon without removal of. metal in the making thereof, and thereafter to drive cut to length corrugated fasteners.

One of the objects of the present Ninvention is to produce from a single ribbon orstrip of metal, through a continuity of operations, employing combined, co-acting, opposed, rotary swaging and slitting rolls, said operations performed without the removal of metal in the simultaneous forming of two opposingly faced penetrating edges and thereby producing two sharpened severed strips; each severed strip having a relatively blunt driving end and a smooth, compressed, work hardened, continuously beveled, 'sharp cutting, penetrating end; V shaped when viewed in end section, said penetrating end may be of scalloped, or of sawtoothed, or of plain edged formation; thereafter, simultaneously to pull, to corrugate andv to feed, to sever, and to drive the completed severed corrugated fastener into wood or other material for such general purposes as the splicing of shooks, box ends. knots, splits, basket bottoms, sash, doors, columns, furniture, wood novelties and the like.,

Other objects are to obtain without the removal of metal in the forming of the penetrating end of the fastener thru a sequence of rotary swaging operations upon a smooth flat metal strip or ribbon, adapted to the manufacture of corrugated fasteners, having the required gauge, temper and the width to produce when severed longitudinally intermediate the blunt side edges thereof, two strips of at sharpened fastener stock; each of said severed strips provided with a blunt driving end, a compressed, smooth beveled, continuous sharp cutting penetrating end, V shaped when viewed in end section; thereafter to pass the sharpened flat strips to and between combined power driven co-acting, pulling, 'corrugating and feeding rolls; thereby simultaneously to pull and to advance said strips lengthwise, to corrugate substantially crosswise, i. e., to continuously bend and rebend the metal so as to form corrugations extending alternately on each side of the central or medial plane of the resultant fasteners; and thereafter, to feed said corrugated fastener stock into co-acting fastener severing means and thereafter into fastener driving means, in and after the manner employed in sheet metal fastener driving machines.

More specifically stated, in the machine of my invention I employ a flat, smooth metal ribbon or strip of such commercial width and tolerance, gauge and temper as to simultaneously produce from said strip, two strips, each of said 5 strips having a sharp cutting, beveled penetrating end formed thereon without removal of metal in machining by a rotary metal compressing and slitting process, resultant of a continuous. smooth surfaced, knife edged, beveled pene- 1o trating end, V shaped when viewed in end section.- 'I'he machined metal of the penetrating end of the fastener intermediate the V, of greater density and therefore of greater hardness than the non-beveled metal of the fastener 1s strip; thereafter, the terminal ends of the severed sharpened strips pass to and between my new and improved form of mated gear driven, co-acting, combined, pulling, corrugating and feeding rolls, wherein the sharpened strip is 20 simultaneously pulled into andpassed through and fed out of the corrugating rolls in the direction of its length, is vthereby continuously corrugated by bending and rebending to produce corrugations of parallel formation or of diver- 25 gent formation as. desired. Thereafter, one or both of the sharpened corrugated strips may exit the machine to be coiled on a reel, or one or both said strips may be fed into a companion corrugated fastener driving heads, thereby to 30 produce a. duplex head corrugated fastener making machine.

The machine may be operated without the fastener driving mechanism functioning and the completed cut to length fastener may be hand 35 hammer driven; or operated without the fastener corrugating, severing and driving mechanism, the sharpened flat fastener stock may be assembled exterior of the machine into coils wound on suitable cores containing several hun- 40 dred feet to the coil.

commercially, corrugated fasteners in coils are sold by weight, a matter which is of importance in the consideration of the object of my improved method of making corrugated 45 fasteners; in that, among the new novel and outstanding features in the manufacture of the corrugatedfasteners of my invention I produce simultaneously from a single strip of metal by a combined severing and compressing process, 50 two strips, each strip having a knife edged penetrating end, V shaped when viewed in end section, susceptible of a wide range of profile formations such as scalloped, or saw tooth, or modifications thereof, or plain edge forma- 55 tion; all machined without removal 0f metal in the making of the penetrating end of the fastener and, therefore, without loss of weight in the manufacture of the completed fastener directly from the metal strip or ribbon. In the prior art the penetrating end of each corrugated fastener is formed individually and separately by a milling, shearing, or grinding process in the production of each fastener strip thereby resulting in an appreciable loss of time, and of weight of metal, when compared with the manufacture of fasteners of my invention.

Another salient feature of my .invention is the obvious fact that the width of the original fiat metal strip when measured at right angles to the parallel side edges, is of lesser width than the combined added widths of the two resultant beveled strips simultaneously formed therefrom in accordance with the process and procedure disclosed in the production .of the corrugated fasteners of my invention, when similarly measured between the driving edge and extreme penetrating edge thereof.A In other words, the combined width of the two resultant simultaneously formed severed strips in both the saw edged and plain edged type of fastener, measured from .the extreme driving edge and at right angles thereto, to the extreme penetrating edge tance similarly measured between the parallel side edges of the original strip.

In machines of the prior art the penetrating edge of the fastener is formed singly and is accompanied by the removal of metal from the strip either before or after corrugating, thereby representing an appreciable loss of metal whereas in the machine of my invention I produce two penetrating edges simultaneously without removal of metal. In commercial practice, cut to length fasteners are designated by number, the number referring to the number of corrugations to each fastener and by the distance between the extreme penetrating and driving end, fasteners thus described are sold by count; therefore, it is obvious that in the machine of my invention I produce a greater number of fasteners from a given surface area of material by forming the penetrating end by the method and procedure herein disclosed in whichI employ combined metal compressing and metal severing or slitting means, wherein the metal of the beveled penetrating end is compressed and forced outwardly in such manner as to increase the plan surface area in excess of the original plan area of fastener strip or ribbon.

For the broader purpose vof my invention such a machine may or may not contain the means for doing the driving, may or may not contain the means for doing the severing, or may or may not contain both the means for doing the driving and the severing; and, on the other hand, if it contains the penetrating edge forming means and corrugating means, then, and for the broader purpose of my invention it may or may not contain the means for cutting oi and driving the fastener. In other words, the combination of means for automatically forming the beveled penetrating end without removal of metal; combined means for simultaneously and automatically pulling corrugating and feeding two simultaneously sharpened strips formed from one strip, an'd severing means and driving means, is new with me. Preferably, however, the machine includes means for rotatably impressing 0r swaging opposingly into thel fiat side surfaces inter-I mediate the side edges thereof, of a metal strip, a compressed, work hardened, continuously beveled, knife edged, sharp cutting penetrating ends, substantially of X shaped appearance when viewed in endl section before complete severance, and V shaped when viewed in end section after severa-nce; means to return upset metal within the body of thief-strips," means then simultaneously pull said sharpened strips into, and thru 1co- -acting, mated, registered, corrugating rolls, thereby to corrugate said sharpened strips relatively crosswise, to advance a said corrugated strip in the direction of its length; for then cutting ofi' a length of such transversely corrugated strip, and for then driving the finished fastener into the wood or other material in the general direction of the corrugations either with or across the grain of the wood.

The series of machine operations herein described provides for the rapid and economical manufacture of the new fastener in combination with a fastener severing and driving machine. The fastener as an article is free from burrs, is uninterruptedly beveled throughout its longitudinal vlength at the penetrating end thereof, the

vdetail in the following specification. It is to be understood, however, that the specific disclosure herein is for the purpose of exemplication only and that the scope of the invention is defined in the following claims.

My invention is illustrated more or less diagrammatically in the accompanying drawings whereinsection of so much of a corrugated fastener making and driving machine as is necessary for the understanding of my invention.

Fig. 2 is a sectional diagrammatic plan view l taken partly on line 2-2 of Fig. 1, illustrative of the progress of the metal strip thru the strip positioning guides; penetrating edge formingA rolls; upset metal flattening and feed rolls; combined pulling, corrugating and feeding rools; fastener severing and driving mechanism, power driven ratchet actuated mechanism, exit guides and fastener coil.

Fig. 3 is a front elevation of co-acting swaging rolls adapted to impart registered saw-tooth formation to a metal strip shown in section intermediate the working faces of the rolls.

Fig. 4 is a bottom perspective side view on an enlarged scale of saw-toothed corrugated strip with saw-toothed points in a random position with respect to the medial plane of the fastener.

Fig. 5 is a bottom perspective side View on an enlarged scale of saw-toothed corrugated/istrip, with saw-toothed points alternately positioned in substantially parallel relation along lateral edges of the fastener and on the crests thereof.

Fig. 6 is a bottom perspective side View of an enlarged scale of saw-toothed corrugated strip 45v Figure 1 is a perspective front view partly in with saw-toothed points positioned substantially in the medial plane of the fastener.

Fig. 7 is a bottom perspective side view on an enlarged scale of a plain edged beveled corrugated fastener formed by the roller swaging action after the manner illustrated in Fig. 1, Fig. 8, Fig. 16, Fig. 23, and Fig. 24.

Fig. 8 is a fragmentary view on an enlarged scale, of a flat metal strip shown in section undergoing lbeveling operation intermediate opposed rotary swaging rolls.

Fig. 9 is' a fragmentary view on an enlarged scale illustrating the action of returning into the strip the up-set metal of the partly beveled :and partly severed fastener strip.

Fig. 10 is a perspective diagrammatic view of presharpened fastener strips intermediate mated combi d, pulling, corrugating and feeding rolls and in c bination with fastener severing and driving means and roll actuating mechanism.

Fig. 11 is a view in elevation of combined pulling, corrugating and feeding rolls, wherein is represented the development 'of the parallel corrugating roll and resultant corrugated fastener strip in combination with a divergent corrugating roll and development of resultant divergent corrugated fastener strip. I

Fig. 12 is a front elevation partly broken away of resultant progressive steps in producing two severed, compressed, beveled plain edged strips of pre-sharpened fastener stock from one strip of metal.

Fig. 13 is a front elevation partly broken away oi resultant progressive steps in producing two saw-toothed beveled edged strips of pre-sharpened fastener stock from one strip of metal.

Fig. 14 is a fragmentary enlarged perspective 'front view taken on line lil-I4 of Fig. 13 indicating in shaded lines the area of compressed, work hardened metal, positioned intermediate the X of the beveled portions of the strip.

Fig. l5 is an end View partly in section taken on line |5-I5 of Fig. 2 of gear driven fiat cylindrical upset metal reducing rolls and connected actuating mechanism.

Fig. 16 is an end view partly in section taken on line |6-i6 of Fig. 2 of mated gear driven swaging rolls adapted to impart V shaped plain ,edged formation to a metal'strip shown in section intermediate the working faces of the rolls, interchangeable with registered saw-tooth penetrating edge forming rolls of Fig. 3 and connected actuating mechanism.

Fig. 17 is an enlarged plan'view of the completed severed saw-toothed divergent corrugated fastener, the teeth placed in random position with respect to the medial line of the' fastener.

Fig. 18 is a plan view of the penetrating edge of same.

y Fig. 19 is a perspective view of co-acting fas--lv Fig. 23 is an enlarged view partly in section' and partly in elevation of a metal strip illustrative of the area of contact between the rotating disc and bevel of the metalv strip and they severing compressing .action of the combined rotary co-acting, swaging and severing discs prior to separation of the strip into two beveled strips.

Fig. 24 is an enlarged view partly in section and partly in fragmentary elevation of a metal strip, co-acting rotary swaging' and slitting discs illustrative of clearance angie of rotary rolls employed in the successive operations of forming sharp, knife like cutting edge of the penetrating end.

Like parts are designated by like characters thruout the specifications and drawings.

Referring to Fig. 1, representative in part, of a commercial form of corrugated fastener feed ing, severing and driving machine, to which I have added parts embodying the principle of my invention. The hollow pedestal A. supports a housingT partly open and partly closed comprising a frame A1, the form of which is immaterial it being only essential that it serve as a firm and rigid mounting for the power actuating mechanism and 'associated parts therein contained, in suitable elevated position.

To operate the machine, pressure .on the foot operated clutch release treadle A releases a one revolution clutch pin A effecting engagement between the power driven flywheel A and the operating shaft B causing same to rotate thru one complete revolution. The operating shaft B is mounted in the hollowed out enclosed portion of housing frame A, in suitable bearings A1".

Reference being had to Fig. 10, a combined crank plate and enclosed cam B integral with the operating shaft B, enclosed in the hollowed out portion of the housing frame A, and positioned rearwardly of the housed fastener driving head A, functions to impart timed reciprocal straight line motion to a co-acting fastener strip severing knife K thru a pin connected rocker arm K pivotally mounted on shaft K and provided with cam roller K5 which contacts the enclosed cam surface of B. A,crank pin B functions thru a p itman B which transmits reciprocal straight line motion to an overhead rod B, which in turn imparts an up and down motion to housed fastener driving head A and to its attached fastener driving blade A.

To the reciprocating overhead rod B is fixedly attached an extension arm B which in turn imparts motion thru a connecting link B to a pawl carrying arm B loosely mounted on a wormv drive shaft F1 and contacting with a ratchet wheel F secured to the outer end of the worm shaft F* and contacting a ratchet engaging pawl Bs loosely secured on the arm B by pin B, A conventional cam release B pivotally mounted on pin B secured to the framev A functions to regulate the length or arc of engagement of the pawl Bs with the ratchet wheel F, so to limit and to regulate intermittent rotation o f the ratchet operated shaft F1.

Reference being had to Fig. 2, the shaft F1 mounted onsuitable support F on the frame A1 is shown in part and broken away, functions to rotate in unison thru a train of gears all of the opposed connected roller mechanisms positioned on frame'A Attached to the shaft F is a series of helical gears F" meshed with corresponding small helical gears F', as in Fig. 2, Fig. 10, Fig. and Fig. 16, xedly attached to the stub end of the adjustable roller receiving and drive shaft F4; immediately above, is fixedly attached a spur gear F5 meshed with a like spur gear F6 fixedly attached tothe stub end of the roller receiving and driving shaft F'.

The 'shafts Ff and F'7 are adapted to receive the key secured strip manipulating rollers of various types, such as are shown in Fig. 1, Fig. 2, Fig. 3, Fig. 10, Fig. 15, Fig. 16, Fig. 23 and Fig. 24 and modifications thereof. Up and down timed movement of the bar B, actuated as described, causes all of the penetrating end forming rollers S; combined upset metal flattening and feed rollers U; the combined upper paired corrugating roller C1 and corresponding lower paired corrugating rollers C to rotate in a direction to advance the strip R lto and thru strip positioning guides G1 spaced at intervals in advance of and intermediate of the paired, penetrating end bevel forming rollers S of the plain 1 edge type of fastener, or S of the saw tooth type of penetrating end forming roller; thereafter thru upset metal flattening rollers U; thence, thru coacting combined pulling, corrugating and feeding rollers Cl and C, then into the path of fastener driving means; the fastener severing means in cam timed relation to the aforedescribed means.

The machine as illustrated is adapted to impart a variety of tooth formations to the penetrating end of the fastener, i. e., to produce corrugated fasteners of the type known to the trade as "plain edge corrugated fasteners,

' shown in Fig. 7, Fig. 10 and Fig. 19 and in the unc'orrugated sharpened strip form, as in Fig. 12, or of the saw tooth type of corrugated fastener as in Fig. 4, Fig. 5,.Fig. 6, Fig. 11 and Fig. 17 and in the uncorrugated sharpened strip form in Fig. 13, Fig.I 21, and Fig. 22. A wide variety of beveled tooth form swaging rollers may be substituted for the two general types of rollers S1 and S herein shown without departing from the spirit of my invention.

The beveled penetrating end forming swaging rollers, assembled as shown in Fig. 3 and Fig.

16, are mounted in any suitable form of bearings so that the paired swaging rollersmounted on the drive shafts F and F are held in pre-determined registeredmated position, in such manner that the gear driven shaft F1 is held in xed bearings in the 'frame A1 and the gear driven shaft F is held in screw pressed adjustable bearings F, actuated by pressure screws F, which permit spaced adjustment of the cutting edges S of the penetrating edge forming rollers to the desired distance. The safe minimum' allowable distance between the rollers is permanently maintained by safety lands S2 on each of the opposed rollers, said lands functioning by surface contact to prevent the bevel forming cutting edges SI of the roller from contacting, thereby to destroy the sharp cutting beveled edges thereof. Any suitable form of vertical aligning device may be employed such as interlocking grooves S to maintain alignment and.

- register of the cutting edges S1.'

mined width. The strip R initially enters into and is pulled thru the machine from the entering end E of the partly open portion of the frame A, thereafter passes progressively thru one or more sets of strip receiving and positioning guides G1, shown in perspective in Fig. 20 5 and in sectional plan view in Fig. 2. Any desired form of guide may be used to maintain the strip in position to be acted upon by strip manipulating rolls. The guides function to maintain the longitudinal axis and the medial plane of the strip R in such xed predetermined position with respect to the opposed bevel forming edge S1 of the swaging rolls, that when acted upon by swaging rollers initially forms the penetrating end of the fastener R and the cutting edgd l5 R as shown in Fig. 12 in the plain edge type of fastener, and in Fig.V 13 in fastener of saw Moth penetrating edge formation; and is also width as determined by the positioning of the guides l-Gr with respect to the edgegS,1 of the swaging rollers S. The strip may be wholly di- 25 vided by the first set of combined penetrating edge forming and slitting rollers into two beveled sharpened strips, R1 the upper strip, and R2 the lower strip, or may pass successively thru one or more sets of combined penetrating end forming 30 and slitting rolls in such arrangement as shown in Fig. 1 and Fig. 2 wherein the strip R is simultaneously beveled in register on its opposed longitudinal sides by the beveled forming and slitting edges S1, each pass advancing the beveled 35 cutting edges S1 of the opposed rolls to greater depth within the strip until severance is completed, thereby producing strips R1 and R'.

During the beveling operation, upset metal S of more or less prominence is thrown up at the outer surface edge of the beveled faces as shown in Fig. 8. The upset metal is returned into the metal of the strip by at surfaced opposed combined strip pulling, feeding and flattening rollers U, shown in Fig. 1, Fig. 2, Fig. 9 and Fig. 15 adapted to return the upset metal S into the body of the strips R1 and R. thus reducing the strip to its original thickness, and simultaneously to advance the strip metal in the direction of its length. l

The narrow side edges of the strip R in its initial form, are the blunt driving ends R3 of the severed beveled strips R1 and R. During the forming of beveled sides of the penetrating end R the metal intermediate the sides is compressed thru the area as is indicated by the darkened shaded sections in Fig. 8, Fig.9, Fig. 12, Fig.' 13 and in the enlarged sectional views of Fig. 14, Fig. 23, and Fig. 24. It will be seen that the penetrating end of the fastener is substantially of X shaped appearance when viewed in end section before severance, and V shaped when viewed in end section after severance, thus the cutting edge R4 is formed by the meeting of the planes of the beveled surfaces intersecting 65 intermediate the longitudinal side edges, the sharp cutting edge R* is continuous thruout thev length of the fastener strip inboth the uncorrugated and corrugated state.

The beveled surfaces Ss of the penetrating end 70 forming rolls S and substitute rolls S contact and enter into forced, opposed, rolling and sliding contact with the metal of the strip R during the forming of the smooth, beveled, compressed, penetrating ends of the strips R1 and 75 R. The fixed distance between the cutting edges Sx is capable of being maintain-ed thru lands S2 or by any other desired form of positive roll separating means, so that, during the prog- 5 ress of the strip R thru one set or thru successive sets of penetrating end forming rolls the cutting edge of the roll S1 may be caused to 'successively advance and force its way into the lmetal'of the strip up to the point of severance. .1p In practice there ls a noticeable tendency for the metal of the strip R to rupture during manipulation and leave a ragged penetrating edge R* of appreciable width, due to the side pressure of the beveled moving surfaces of the penetrating 5 edge forming rolls contacting the formed beveled 4side of the embryonic penetrating edges of the metal strip R, thereby creating excessive side pressure on the strips R1 and R2 sufficient to cause the metal intermediate' the cutting edges 2o Sto rupture before the completion of the slit- Ating operation, as is obvious and as is clearly apparent from Fig. 23. In the machine of my invention I employ a series of opposed combined beveled swag-lng and slitting rolls in which the 25 included angle of .the opposed beveled surfaces of the rolls is progressively decreased s as to vreduce side contact between the bevel of the rolls and the metal of the strip R, thereby permitting the cutting edges S1 to function to produce the tu hard, sharp cutting, knife like, swaged cutting edge R of the penetrating end on each severed strip R1 and R as indicated in'Fig. 24 without rupture of the metal to an extent to effect the .sharp cutting properties essential to the pene- :lo trating edge of the fastener. Y

The cutting edge R4 of the strip R1 faces the table A1 which supports the material A in which Ithe fastener is to be driven and the cutting edge R of the strip R is oppositely faced. The sharp cutting severed strips 1'1,l and R next enter into and are pulled thru, respectively, Aan upper pair and a lower pair of gear driven -combined mated co-acting pulling, corrugating and feeding rollers; of which paired rollers C1 V45 engages strip R1 and paired rollers C2 engages strip R, said rollers acting to bend and rebend the sharpened metal strips R1 and Rto produce 'transverse corrugations therein and to simultaneously advance the now corrugated strips R and R thru the corrugated fastener guide plates `G, at the knife end of which is mounted a spring pressed stripper K placed slightly in advance of and functioning to guard the cutting ledge of the stationary co-acting severing knife 55 K1, during the advance of the corrugated strips v into the line of--the driving head A". 'Ihe cutting `edges of the knives K and K are of greater width than the strips Rl and R. It is, theregfore, apparent that the strip Rl crosses the path 0 of the co-acting severing knives K1 and K2 and enters the spring press/ed, severed fastener retaining guides G3, in position to be driven home by the fastener drivingblade A9. The strip R2 may be shunted to move within the exit guides 65- G and thereafter be guided exterior of the machine into a fastener severing and driving head thereby forming duplex fastener driving "heads, or it may be accumulated in coiled form 70 as is indicated by R of Fig. 2.- The forward rnovement of the strips R and R may both be directed' within the guides G in such manner that the co-acting severing knives Kl and K function toform cut to length corrugated fasten- 75 ers R which exit the machine thru the space otherwise occupied by the then disconnected elements A and G. 1 l

Briefly stated, in the machine of my invention one complete rotation of the operating shaft B advances the strip R, by a step by step move- 5 rugating and feeding rollers wherein both strips R1 and R are corrugated and advanced in the 15 direction of their length; thru corrugated fastener severing means K* and K, wherein strips Rl and R2 mayI both be severed' to, produce cut to length fasteners R', as shown in Fig. 19, or the strip R may proceed thru the fastener severing and driving means and in the absence of material A be discharged as completed cut to length fasteners on the table A, and the strip R exit the machine thru the guides G.

The machine is adapted to produce fasteners of the plain edged type as shown in Fig. 7. and of the saw-tooth type in a wide variety of toothy forms as indicatedby Fig. 17, Fig. 19, Fig. 21, and Fig. 22 and in Various combinations of corrugated tooth arrangements as in Fig. 4, Fig. 5, and Fig. 6.. Fasteners of parallel and divergent corrugations may be produced sirnultaneously as is illustrated in Fig. 11 by co-acting corrugating rollers C and C2 wherein two strips are simultaneously corrugated, the strip R1 hav- 35 ing parallel corrugations and the strip R2 having divergent corrugations.

A parallel arrangement and a divergent arrangement of the plurality of sets' or series of ridges and the accompanying depressions appear- 40 ing on the periphery of the mated corrugated rollers, illustrated in Fig. 11, are well known to the prior art. I claim as new with me the combination of arrangement wherein one strip R is simultaneously divided into two sharpened strips R1 and R, and thereafter simultaneously corrugated and thereafter severed, as herein disclosed, described and illustrated.

It will be seen that the two smooth presharpened strips R1 and R entering respectively 50 the corrugating rollers C and C, will be parallel corrugated by the upper roller C and divergently corrugated by the lower roller C2 and both strips will issue without being diverted from the straight line of travel as fed into the rollers for the strip is not shortened by the corrugations any more towards the one edge than towards the other. Hence, the corrugated strips are delivered indefinitely in shape to be wound one upon itself and to form a compact coil of cylindrical contour as shown at R5 of Fig. 2, or the strips may be simultaneously advanced into corrugated fastener severing means'in which both strips are severed into cut -to length corrugated fasteners, R" as in Fig. 19 or advanced into 65 fastener driving means, one strip R1 in frame A1. and the companion strip R2 exits thru guides G4 of the frame A1 of the machine, into exterior related fastener severing and driving means not shown, but similar in all respects to the fastener severing means and the fastener driving means of Fig. 1, Fig. 2, and Fig. 10 Referring to Fig.v 14, the embryonic beveled penetrating ends Rs indicated by the darkened 'than fasteners Amade by a, shearing or grinding process and having non-compressed, non-hardened penetrating edges.

' The strip metal is advanced in the direction of its length toward the fastener driving end of the machine by a step by step movement imparted by the up and down movement of the pawl carrying arm B1 and the ratchet engaging 'pawl B contacting the ratchet wheel F. The

distance advanced by the strip on each complete revolution of the operating shaft B is controlled by a cam' release B1 contacting the surface of the ratchet engaging pawl B to limit the movement by withdrawing the engaging point between pawl and ratchet wheel. Any suitable timing arrangement may be employed.

I claim:

1. In a machine for making corrugated fas- 'teners from metallic ribbon, the combination of cooperating swaging means for rst severing said ribbon into two strips each strip having a swaged beveled sharp-cutting penetrating edge requiring no further sharpening treatment, means comprising safety lands for maintaining the opposed bevel-forming cutting edges of said swaging means short of contact, corrugating means for then forming transverse corrugations in one of said sharpened strips, and means for then severing a suitable length of said sharpened corrugated strip.

2. In a machine f or making and driving corrugated fasteners made from a metal strip, the combination of swaging means for progresysively severing and forming from one metal strip simultaneously two beveled strips providing each strip with a swaged beveled sharpcutting penetrating edge, corrugating means for then forming transverse corrugations in the sharpened strips, severing means for cutting off a suitable length of sharpened corrugated strip, driving means for driving the severed completed corrugated fastener edgewise in a direction to insert the corrugations Ethereof endwise.

3. In a machine for making and discharging corrugated fasteners made from metallic ribbon, the combination of means for swaging and slitting a metallic ribbon simultaneously into two beveled strips each strip having a swaged beveled sharp-cutting penetrating end, corrugating means for formingr transverse corrugations in the sharpened strips, means for cutting olf a suitable length of the sharpened corrugated strips, means for discharging the severed completed corrugated fasteners edgewise exit the machine and operating connections by which the swaging and corrugating, cutting and discharging operations are performed on the ribbon and on each of the strips in the order mentioned.

4. In a machine for making and driving corrugated. fasteners made from metallic ribbon, comprising mechanism for guiding metallic ribbon in swaging relation with swaging dies thereby producing two metallic strips having beveled knife-like penetrating edges, mechanism ,for transversely corrugating said strips, mechanism for advancing and guiding one of said corrugated strips into cutting relating with co-act- 5 ing severing knives for cutting off a suitable length of the corrugated strip thereby forming a cut to length corrugated fastener, mechanism for driving said cut to length fastener, and guiding means for guiding the unsevered strip exterior the machine.

5. In a machine for making corrugated fasteners, the combination of rotatably mounted co-acting mated swaging rolls having the opposed cutting edges thereof in register and maintained short of contact, said rolls adapted to swage and sever a metallic ribbon into a plurality of strips each strip having a continuous sharp-cutting swage-beveled penetrating edge said beveled edge impressed into the ribbon and 20 the ribbon severed into strips without the removal of metal therefrom, mechanism. for advancing the strips forwardly in the direction of their length thru corrugating mechanism for transversely corrugating said strips, fastener severing mechanism comprising co-acting cutting knives for severing lengths from one of said transversely corrugated strips, driving mechanism for engaging the blunt end of said corrugations to, drive said finished fastener edgewise exit the machine, a shaft for operating said advancing swaging corrugating severing and driving mechanism, means for guiding the said metallic ribbon to said swaging means and for thereafter guiding the said strips in the di- 35 rection of their length to the said corrugating mechanism and thereafter guiding one of said strips into cutting and driving relation with severing and driving means, and means for varying the number of corrugations of each finished fastener.

6. In a machine for making corrugated fasteners from metallic ribbon, the combination of rotatably mounted coacting swaging and slitting rolls for producing a sharp swage-beveled edge on one edge of each ofthe resultant strips without the removal of metal in the swaging and slitting thereof, corrugating and feeding mechanism for corrugating said strips transversely and for advancing said corrugated strips forwardly in the direction of their length, fastener severing mechanism comprising co-acting cutting knives for cutting off lengths of one of said transversely corrugated strips, driving mechanism for engaging the blunt ends of said corrugations to drive individually each nnished corrugated fastener edgewise and in a direction to insert the corrugations endwise, a shaft for operating said driving cutting corrugating and swaging mechanism, means for guiding the'said 60 metallic ribbon to said swaging means and means for thereafter guiding said strips to said corrugating cutting and driving means, and means for varying the length of said fastener.

7. The combination with devices for opposingly swaging a metallic ribbon into strips, each strip having a sharp hardened beveled penetrating edge, of devices for corrugating said strips, of devices for cutting one of said strips into suitable lengths thereby forming cut to length corrugated fasteners, of guide means for advancing the other of said strips exit the machine for assembly in coil form, of devices for driving the severed fasteners successively into wood in the line of their corrugations and a sinteners from metallic ribbon, the combination of co-acting swaging devices for swage-beveling and slitting a metallic ribbon into beveled serrated edged strips, of co-acting corrugating devices for corrugating said strips, of co-acting devices for subsequently severing said strips into suitable lengths thereby formingfastener plates of predetermined dimensions, of co-acting devices for guiding the fastener plates. exit the machine and means for actuating said devices in timed relation by a step'by step movement.

9. In a machine for making and driving corrugated metallic fasteners, the combination of automatic means for advancing a metallic ribbon in the direction of its length thru the machine, means for then swage-beveling and severing said 'ribbon into. a plurality of beveled edged strips,

means for then transversely' corrugating said strips, means for feeding saidl transversely corrugated strips, means for severing a fastener. of suitable length from `one vof said corrugated strips, means-for then driving said corrugated fastener edgewise and in a direction to insert the corrugations endwise and connected mechanism by which the swaging and feeding and corrugating and severing and driving operations are performed in the order mentioned, said mechanism comprising a single shaft operatively connected with all of said means.

10. In a machine for making and driving corrugated fasteners, the combination of co-acting swagers for sWage-beveling and swage-severing a metallic ribbon into strips, co-acting corrugating rolls for transverselyl corrugating, said strips, co-acting severing knives for transversely severing a suitable length from o ne of the corrugated strips, co-acting spring pressed fastenerholders for supporting the severed fastener preparatory to driving, a fastener driver for driving the corrugated fastener edgewise and in a direction to insert the corrugations endwise, and suitable connecting means for automatically operating the swaging, feeding, corrugating, severing and driving mechanism.

11. In a machine for making rugated metallic fasteners, the combination of automatic means for' first swage-beveling and swage-severing a metallic ribbon into two strips, each strip having a sharp-cutting beveled burrfree finished penetrating edge, said penetrating edge requiring no'further sharpening treatment, means for then forming transverse corrugations in the flat strips, automatic means for then severing a suitable length from one of said corrugated strips, automatic means for nally driving the severed'corrugatedlength edgewise, and suitable operating connections by which the corrugating and cutting and driving .operationsare performed on each fastener in the order mentioned.

12. In a machine for making and driving serrated corrugated metallic fasteners, the combination of automatic means for first swagebeveling and sWage-severing a metallic ribbon into two serrated strips, each strip having a sharp-cutting beveled serrated burr-free finished penetrating edge, said serrated penetrating fedge requiring no further sharpening treatment, means for then forming transverse corrugations in the flat strips, automatic means for then sevcorrugated strips, automatic means for finally and driving cordriving the severed corrugated length edgewise and in a direction to insert the corrugations endwise, and suitable Aoperating connections by which the corrugating and cutting and driving operations are performed on each fastener in the order mentioned. I

13. In a lmachine for making and driving corrugated metallic fasteners, the combination of means for first forming two beveled edged strips by swaging a relativelyv flat metallic ribbon in 10 the direction of its length and between the vlongitudinal side edges thereof, mean'sfor then forming. transverse corrugations inl the strips, means for then cutting offl a suitable length from done of said strips o'f corrugated metal, means for 15 finally driving the cut l-length of corrugated strip \'edgewise and in a direction to insert the corrugations endwise, means for then guiding the other of said corrugated strips exit the machine and suitable operating' connections by which 20 the swaging and corrugating and cutting and driving operations and exit guiding of one strip are performed on the metallic ribbon and on eachf' fastener stripin the order mentioned, said Vcutting means including a pair of coacting sev- 25 ering knives, one knife being stationary and the other knife being movable, the cutting edges of which knives are longer than the transverse corrugations in the' strips ofl corrugated metal, the said driving means -including afastener driver 30 provided with an end portion adapted to engage the ends of the transverse corrugations of each fastener. w i

14. In a machine for making and discharging corrugated metallic fasteners, the combination 35 of means for swaging a metallic ribbon into two strips having sharp-cutting beveled edges, means for corrugating said beveled strips, means for transversely severing a suitable length from each of said corrugated strips forming fasteners, means for holding the severed corrugated fasteners preparatory to discharging, driving means for discharging the fasteners edgewise exit the machine, guiding means for guiding the ribbon vand strips thru the machine in xed relation to the swaging corrugating severing and discharging means, and suitable connections by which the swaging corrugating severing and driving means are caused to function in the order mentioned, said severing means including a pair of cooperating shearing knives the cutting edges of which are longer thanl the combined .width of the corrugated strips. said discharging means including a reciprocating head provided with aV relatively thin end portion adapted to engage the fastener.

l5. In a machine for making and ejecting corrugated metallic fasteners, the combination of means for first swage-beveling and severing a metallic ribbon into strips, means for then form,- ing transverse corrugations in the strips, means for then severing la suitable length from said corrugated strips, means for ejecting the severed cut lengths of corrugated strip edgewise exit the machine, suitable operating connections by 65. which the swaging and corrugating and severing and ejecting operations are-performed in the order mentioned, spring pressed holding means adapted to engage and support the severed lengths of corrugated fastener preparatory to 7n discharging the fastener. 4

16. The combination with a supportingbody of metal and associated supporting parts, of a pair of integral swage-beveling and severing and spacing rolls adjustably mounted, said rolls u adapted to impress serrated formations into metallic ribbon thereby forming strips, of a pair of corrugating rollers for corrugating strips of metal, a cutter device and cutter bed for severing one of -the corrugated strips into suitable lengths and thereby forming fastening plates,

' devices for feeding the strip, a hammer device for driving fastener plates successively and edgewise in the line of the corrugations, spring operated ngers for holding the fasteners in position, the driving device being arranged to receive a driving blade adapted to pass between said ngers, and means for guiding one of said strips exterior the machine.

17. In a machine for making and driving corrugated fasteners made from metallic ribbon, .the combination of means for swaging two beveled edged strips from one ribbon, each strip having a swaged beveled sharp-cutting hardened edge at the penetrating end, corrugating means for forming transverse corrugations in the sharpened strips, means for severlng a suitable length from one strip thereby Aproducing va cut-to-length corrugated fastener, means for driving said fastener edgewise and in a direction to insert the corrugations end- `wise, means for' guiding the unsevered strip exit the machine, operating connections by which the swaging and corrugating and severing and driving operations and exit guiding of one strip are performed .as described on the respective strips and fastener in the order mentioned.

18. In a machine for making and discharging corrugated metallic fasteners, the combination of means for' first sWage-beveling and slitting a metallic ribbon into two strips, means for then forming transverse corrugations in the strips, means for then severing a suitable length from said corrugated strips, means for nally discharging the severed lengths of corrugated strips edgewise and in a direction to exit the machine.

19. In a machine for making corrugated fasteners from metallic ribbon the combination of means for swaging serrations and concurrently severing the ribbon in the direction of its length into a plurality of strips having beveled sharp cutting serrations on one edge of each of the resultant strips, means for simultaneously corrugating the strips and means for advancing the ribbon and strips in the, direction of their length by a step by step movement.

20. In a machine for producing corrugated fasteners from metallic ribbon, 'the combination of ribbon swaging and slittingmeans and corrugating means operating upon said strips subsequent to the division of the ribbon into strips by said combined slitting and swaging mechanism, said swaging mechanism comprising lopposed gear driven rolls each roll provided with opposed safety lands adapted to maintain the cutting edges of said swaging rolls short of contact and in vertical alignment.

21. In a machine for making corrugated fasteners from metallic ribbon, the combination l of cooperating swaging means for first severing said ribbon into two strips each strip having a swaged beveled sharp cutting penetrating edge requiring no further sharpening treatment, means comprising safety lands for maintaining the opposed bevel forming cutting edges of said swaging means short of contact and corrugating means for then forming transverse corrugations in one of said sharpened strips.

other -strip are in divergent relation.

22. In a machine for making corrugated fasteners the combination of means for simultaneously swaging and slitting a flat metallic ribbon producing sharp cutting beveled serrations on one edge of each of the resultant separated 5 strips, means comprising flattening rolls for returning the .swaged upset metal into the body of the strips, and means for then corrugating said serrated edged strips. i

23. In a machine for producing fasteners from metallic ribbon, the combination of stock sharpening ybeveling hardening serrating and slitting mechanism for producing a plurality o'f strips, each of which is sharpened beveled hard-A ened and serrated at one edge thereof.

24. In a machine for producing corrugated fasteners from metallic ribbon, the combination of stock sharpening beveling hardening serrating and slitting mechanism for producing avplullrality of strips, each of which is sharpened 20 beveled hardened and serrated on one ledge thereof, and means for then corrugating each strip.

25. In` a machine for producing corrugated fasteners from metallic ribbon, the combination of stock sharpening beveling hardening serrating and slitting mechanism for producing' a plurality of strips, each of which is .sharpened beveled hardened and serrated on one edge thereof, means for then corrugating each strip and strip severing vmeans for then transversely severing a length from said strips.

26. In a machine for producing fasteners .from metallic ribbon, the combination of a succession of gear driven co-acting swaging rolls for. beveling sharpening serrating and slitting a ribbon into a plurality of strips therewith producing without loss of metal sharp cutting bevels hardened and serrated on one edge of the resultant separate strips; means for corrugat-Ao ing the serrated edged strips. 27. In a machine for producing fasteners from metallic ribbon, the combination of -a series of swaging elements for swaging bev'eled surfaces and serrated edges on metallic rib- :.45 bon producing a plurality of strips, each of the resultant strips having beveled serrationson one edge thereof, a series of corrugating means for corrugating each strip, and guide means for guiding said corrugated strips exit the machine. l.,

28. In a machine for making corrugated fasteners, the combination of means for swaging beveling and serrating flat metal stock, thereby producing two sWage-beveled serrated vedged strips without loss of metal and means for corrugating said bevel serrated strips. 29. In a machine for making corrugated fasteners, the combination of a succession of swage-beveling and swage-slitting mechanisms,

. co-acting duplex corrugating rolls for producingl corrugations in the resulting swage-beveled strips so that the corrugations of one strip are in parallel relation and the corrugations of the 30. In a machine for making corrugated fas-v teners,l the combination of swaging means for beveling hardening serrating and slitting flat metal stock and simultaneously producing sharp cutting hardened bevels and serrations on one edge of the resultant lseparate strips, corrugating A7 means comprising co-acting units for operating upon the strips, means for effecting a relative adjustment of the swaging and corrugating means to position the opposed units of said swaging means and the opposed unitsbf'said 7;

corrugating means with reference to each other, and strip guiding means positioned in cooperative relation to the swaging means and the corrugating means.

3l. In a machine for making corrugated fasteners, the combination of stock beveling and slitting mechanism for producing a plurality of sharp swaged beveled strips from flat metal stock, corrugating mechanism embodying two sets of cooperating paired rolls, each paired set of rolls provided with mated corrugations, the corrugations in one paired set of rolls being parallel with respect to the axis of the roll and the corrugations in the other paired set of rolls being divergent with respect to the axis of the roll.

32. In a machine for producing fasteners from metallic ribbon, the combination of opposed stock swaging rotatable units for slitting a ribbon passed therebetween into beveled serrated edged strips, said units comprising in combination integral elements for beveling serrating and slitting and cylindrical contactng lands for maintaining vsaid lieveling serrating and slitting elements of one unit short of contact with like elements ofthe opposed unit, means for posil tioning the serrations of one unit in register with the serrations of the opposed un'it.

33. In a machine for making and driving corrugated metal fasteners, the combination of a series of coordinated elements comprising, iirst, ribbon guiding elements cooperating with coacting swaging elements for guiding a metallic ribbon in'the direction of its length into swaging relation with swagers adapted to swage the ribbon into strips each strip having two oppw sitely beveled surfaces intersecting and forming a longitudinal cutting edge positioned in the mid plane of the flat strip, said cutting edge ree quiring no further sharpening treatment, of corrugated elements forl then forming transverse corrugations in each strip, of a corrugated strip guiding element for then guiding one of said corrugated strips exit the machine, of co-acting corrugated strip severing elements for then severing the other of said corrugated strips into suitable lengths forming corrugated fasteners, of spring pressed holding elements for then holding the fastener in position to receive`a fastener driver element, of a fastener driver element for finally driving the severed corrugated fastener edgewise and in a directionto insert the corrugations end-wise, and suitable operating connections by which the swaging, corrugatng, cutting and driving operations are performed on the ribbon, strip, corrugated strip and fastener in the order mentioned, including a single shaft the end of which is operatively connected by a iixed element thereon with all said elements and mechanism comprising a clutch for controlling the rotation of said shaft.

34. In a machine for making toothed corrugated fasteners, the combination with means for feeding a strip of metallic ribbon, oi combined swage-bevelers and swage-severers oppositely positioned for operation upon the opposed faces of the metallic ribbon, means comprising concentric land's of slightly greater diameter than thev swagers for adjusting the distance between the swagers, said combined swage-bevelers and swage-severers having beveled cutting faces rotating in a plane at right angles to the face of the ribbon and between the longitudinal side edges thereof, corrugating elements positioned for operation upon the opposite faces of `said metallic ribbon subsequent to the severing of the ribbon into strips, and means for cutting said strips into lengths.

35. In a machine for making and driving corrugated metal fasteners, the combination of coordinated means driven from a power soince, comprising meansv for feeding a flat metal ribbon into guided relation with swaging units, means for swaging the ribbon thus fed into strips each of said strips having a beveled cutting edge on one side edge, means for corrugating the strips, means for cutting oil a suitable length from one of said strips forming a cut length fastener, guide means for guiding the other of said strips exit the machine, means for driving said cut length fastener edgewise and in a direction to insert the corrugations endwise, suitable connections byvwhich the feeding and swaging and cutting and driving operations are performed on each transversely corrugated fastener in the order mentioned. I

36. In a machine for making and driving corrugated metal fasteners, the combination of coordinated means driven from a power source, comprising means for'feeding a fiat metal ribbon, means for swaging the ribbon into strips each of said strips having a beveled cutting edge in the medial plane of each oi' the strips, i. e., in

a plane midway the planes of the relatively wide faces of the strips, means for corrugating the strips, means for cutting 0E a suitable length from one of said strips forming a cut length fastener, guide means for guiding the other of said strips exit the machine, means for driving said cut length fastener edgewise and in a direction to insert the corrugations endwise.

37. In a machine for making toothed fasteners the combination oi coa'cting toothed swagers for swaging a metallic 'ribbon into a plurality of strips each strip having sharp Cutting beveled hardened toothed edges on one edge portion thereof.

38. In a machine for making fasteners the combination of a succession of paired means for swaging a metallic ribbon to sever the same into strips, means for regulating the traverse adjustment of opposed swaging elements, and means comprising contacting lands adapted to maintain said swaging means short oi contact during the severance of the ribbon into strips, and means for corrugating said strips.

39. In a machinevfor making corrugated fasteners the combination of a series of swaging units comprising swaging rolls detachably secured to their respective shafts thereby to permit easy interchange with like rolls having dissimilar configurations. said rolls due to their interchangeability adapted to swage bevel sharpen and sever a metallic ribbon into strips having desired configurations at the penetrating end.

40. In a machine for making corrugated fasteners the combination of a series of swaging units comprising swaging rolls detachably se= cured to their respective shafts thereby to permit easy interchange with like rolls having dissimilar configurations, said rolls due to their interchangeability adapted to swage bevel sharpen and sever a metallic ribbon into strips having desired configurations at the penetrating end, corrugating rolls detachably secured to their respective shafts to permit interchange with like rolls having dissimilar configurations thereby to impart parallel corrugations or divergent corru'- gations to the swaged strips.

JOHN SHERMAN` MCCHESNEY. 

